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QUESTION 634Which of the following ports should be allowed through a firewall to allow DNS resolution to occur to an outside DNS server?

A. 20B. 53C. 80D. 3389

Answer: B

QUESTION 635Which of the following uses port 53 by default?

A. RDPB. QoSC. DHCPD. DNS

Answer: D

QUESTION 636Which of the following ports does DHCP use? (Select TWO).

A. 22B. 23C. 67D. 68E. 69

Answer: CD

QUESTION 637Lisa, a network administrator, needs to allow all websites to be accessible by the sales team for business purposes. Which of the following ports need to be enabled on the firewall? (Select TWO).

A. 23B. 25C. 53D. 80E. 443

Answer: DE

QUESTION 638Lisa, a technician, is asked to not allow FTP traffic on a network. Which of the following ports should be blocked on the firewall to achieve this?

A. 21B. 22C. 23D. 25

Answer: A

QUESTION 639Which of the following ports are MOST commonly used to interactively configure a networking device? (Select TWO).

A. 21B. 22C. 23D. 53E. 67

Answer: BC

QUESTION 640In order to reduce spam email, Kim, a network administrator, changes the standard SMTP port from which of the following port numbers to port number 587?

A. 20B. 21C. 23D. 25

Answer: D

QUESTION 641A company would like all HTTP traffic to filter through a proxy server on port 8080. Which of the following port numbers needs to be redirected through the proxy server to accomplish this?

A. 20B. 80C. 143D. 443

Answer: B

QUESTION 642A company wants to only allow incoming HTTP and HTTPS traffic on their public wireless network. Which of the following port numbers should be the only allowed open ports on the firewall to accomplish this? (Select TWO).

A. 20B. 80C. 143D. 443E. 8080

Answer: BD

QUESTION 643An organization has installed a new firewall. Users need to have access to remote websites and must be able to use SSH to retrieve files from remote locations. Which of the following actions should be taken on the new firewall? (Select TWO).

QUESTION 644An organization recently installed a firewall on the network. Employees must have access to their work computer from their home computer. In which of the following ways should the firewall be configured?

QUESTION 645An organization recently installed a firewall on the network. Employees must be able to send and receive email from a POP3 server. In which of the following ways should the firewall be configured? (Select TWO).

QUESTION 647Kurt, a network technician, has configured a new firewall on the network. Users are reporting errors when attempting to access several websites. Kurt attempts to access several popular websites with no errors, however, he does receive an error when attempting to access a bank website. Which of the following rules would BEST allow access to the bank website?

QUESTION 648A network technician has configured a new firewall to allow TCP port 80 traffic and deny UDPtraffic. Users have reported that they are unable to access Internet websites. The technician verifies by attempting to access a popular website. Which of the following will MOST likely correct the error?

QUESTION 649A network technician needs to address bandwidth issues on the wireless network. There are currently four 802.11n access points. The technician would like to increase the bandwidth. Which of the following would be the BEST solution?

A. Disable SSIDB. Channel bondingC. MIMOD. Increase the signal

Answer: B

QUESTION 650An administrator is receiving reports from an executive that the executive’s wireless access point loses the signal frequently, even though the WAP is on the executive’s desk. The office contains four other 802.11n access points. Which of the following would MOST likely correct interference problems in the executive’s office?

A. Turn off SSID broadcasting for the executive’s access point.B. Replace the 802.11n access point in the office with an 802.11a access point.C. Change the channel on the access point to channel 11.D. Turn off as many lights in the executive’s office as possible to reduce interference.